CN214954534U

CN214954534U - Developing box

Info

Publication number: CN214954534U
Application number: CN202121381772.6U
Authority: CN
Inventors: 刘志勇
Original assignee: Zhongshan Runhong Electronic Technology Co Ltd
Current assignee: Zhongshan Runhong Electronic Technology Co Ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-11-30
Anticipated expiration: 2031-06-21

Abstract

The utility model relates to a developing box, including the casing, be located the power receiving part and the counting assembly of casing longitudinal end and cover the end cover of at least part of counting assembly, the counting assembly includes counting piece, intermediate gear and compels to push away the piece, counting piece and intermediate gear divide the body to form, compel to push away the piece and lie in between counting piece and the intermediate gear for force the counting piece to keep away from the counting gear, the intermediate gear receives the drive power of power receiving part and drives the rotation of counting piece; the counting assembly also comprises a guide rod or a guide block arranged on the counting piece and a guide block or a guide rod arranged on the end cover; the guide block comprises a matching surface matched with the guide rod, and the matching surface is an inclined surface or a twisted surface and is used for guiding the guide rod in the counting process of the counting assembly; along the rotating direction of the counting piece, the corresponding angle of the matching surface is 30-45 degrees, along the rotating axis of the counting piece, the height of the matching surface is 3-5 mm, the rotating track of the counting piece is controlled, and the counting precision is improved.

Description

Developing box

Technical Field

The utility model relates to an electrophotographic imaging field especially relates to a developing box for installing in electrophotographic imaging device.

Background

The developing box is a commonly used printing consumable, wherein stores the required carbon powder of development, for making terminal user accurately know the carbon powder surplus in the developing box, is provided with counting mechanism in the developing box, and is corresponding, be provided with in the electrophotographic imaging equipment with counting mechanism complex by counting mechanism, when developing the box and being installed to electrophotographic imaging equipment, counting mechanism with by counting mechanism mutually support for electrophotographic imaging equipment learns each item parameter of developing box.

Chinese utility model patent CN212846357U discloses a counting assembly 4, as shown in this application figure 1, counting assembly 4 includes counting part, intermediate gear and compels to push away the piece, compels to push away the piece and is used for compeling to push away counting part to the direction of keeping away from intermediate gear, and counting part is provided with power receiving part towards one side of intermediate gear, and the intermediate gear is provided with power take off part towards one side of counting part, through the inclined plane cooperation between the two. The counting assembly is at the counting in-process, and intermediate gear's drive power passes through power take off portion transmits to the counting member with the cooperation of power receiving part, and the back is accomplished in the count, and under the effect of compelling pushing of compeling pushing away the piece, intermediate gear is kept away from gradually to the counting member, until the two break away from the combination.

Although the counting function of the counting assembly can be realized by the structure, the counting piece is completely separated from the intermediate gear along with the separation and combination of the inclined plane between the power output part and the power receiving part, and the counting piece can continue to rotate for a certain angle under the self inertia effect, so that the counting process is completed, the counting piece is not controlled any more after being separated from the intermediate gear, the continuous rotating angle is uncertain and visible, and the counting assembly has the problem of insufficient counting precision; if the counting member is controlled by increasing the length of the inclined surface between the power output part and the power receiving part, the movement speed of the counting member in the process of disengaging from the intermediate gear is too slow, and counting failure can also be caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a developing box, the movement track of the counting part among the counting assembly that wherein sets up can be controlled, and especially the velocity of motion of counting part also obtains controlling to promote counting assembly's count precision.

The developing box comprises a shell for containing carbon powder, a power receiving part and a counting assembly which are positioned at the longitudinal tail end of the shell, and an end cover for covering at least one part of the counting assembly, wherein the power receiving part is used for receiving driving force from the outside, the counting assembly is used for interacting with an external counted piece, the counting assembly comprises a counting piece, an intermediate gear and a pushing piece, the counting piece and the intermediate gear are formed in a split mode, the pushing piece is positioned between the counting piece and the intermediate gear and used for forcing the counting piece to be far away from the counting gear, and the intermediate gear receives the driving force of the power receiving part and drives the counting piece to rotate; the counting assembly also comprises a guide rod or a guide block arranged on the counting piece and a guide block or a guide rod arranged on the end cover; the guide block comprises a matching surface matched with the guide rod, and the matching surface is an inclined surface or a twisted surface and is used for guiding the guide rod in the counting process of the counting assembly; the corresponding angle of the matching surface is 30-45 degrees along the rotating direction of the counting piece, and the height of the matching surface is 3-5 mm along the rotating axis of the counting piece.

The guide block comprises a base and a limiting block arranged on the base, and when the counting assembly finishes counting, the limiting block is abutted to the guide rod.

The guide block also comprises a back plane which is arranged adjacent to the matching surface, and the back plane is positioned between the matching surface and the limiting block along the rotating direction; the tail end of the guide rod far away from the guide rod is adjacently provided with a guide surface and a holding surface, and when counting is finished, the holding surface is abutted to the back plane.

As an embodiment one, the counting part further comprises a chassis and an abutting part arranged on the chassis, and the guide rod protrudes from the chassis; the end cover includes the guide rail with butt portion butt, when butt portion and guide rail butt, compels to push away the piece and takes place elastic deformation, when butt portion and guide rail break away from the butt, compels to push away the piece and compels to push away the count piece for guide bar and fitting surface cooperation.

The end cover also comprises a supporting shaft for supporting the counting assembly, and the guide blocks are arranged along the circumference of the supporting shaft and extend in the same direction with the supporting shaft.

The size of the guide block in the direction of the rotation axis gradually decreases in the rotation direction of the counter member.

As a second embodiment, the counting part further comprises a chassis and an abutting part arranged on the chassis, the guide block is arranged on the chassis, and the guide rod protrudes from the end cover; the end cover includes the guide rail with butt portion butt, when butt portion and guide rail butt, compels to push away the piece and takes place elastic deformation, when butt portion and guide rail break away from the butt, compels to push away the piece and compels to push away the count piece for guide bar and fitting surface cooperation.

As a third embodiment, the end cap includes a guide rail abutting against the guide rod, and the guide block is formed integrally with the guide rail.

At the end of counting of the counting assembly, the acceleration process of the counting assembly is realized by matching a guide rod or a guide block arranged on the counting assembly with a guide block or a guide rod arranged on an end cover, wherein the guide block is provided with a matching surface which is an inclined surface or a twisted surface, the purpose of accelerating the rotation of the counting assembly can be achieved by adjusting the corresponding angle of the matching surface in the rotation direction and the height value of the matching surface on the rotation axis, the motion track of the counting assembly can be controlled, particularly the motion speed of the counting assembly is also controlled, and therefore the counting accuracy of the counting assembly is improved.

Drawings

Fig. 1 is a perspective view of a conventional developing cartridge.

Fig. 2 is a schematic view of an exploded state of a counting assembly in a developing cartridge according to an embodiment of the present invention.

Fig. 3A and 3B are perspective views of a counter according to an embodiment of the present invention.

Fig. 4A is a perspective view of the inner side of the end cap according to the first embodiment of the present invention.

Fig. 4B is an enlarged schematic view of a portion R in fig. 4A.

Fig. 4C is a plan view of the end cover according to the embodiment of the present invention, as viewed from the inside along the rotation axis thereof.

Fig. 5 is a schematic diagram of a state of the counting assembly according to an embodiment of the present invention when counting is completed.

Fig. 6 is an exploded view of a counting assembly according to a second embodiment of the present invention.

Fig. 7 is a perspective view of the inside of the end cover according to the second embodiment of the present invention.

Fig. 8 is an exploded schematic view of a counting assembly according to a third embodiment of the present invention.

Fig. 9 is a perspective view of the inside of the end cover according to the third embodiment of the present invention.

Fig. 10 is a plan view of the end cover according to the third embodiment of the present invention, as viewed from the inside along the rotation axis thereof.

Detailed Description

Compared with the developing box in the background art, the developing box in the embodiment of the present invention is different only in the structure of the counting assembly, and therefore, only a brief description is made here about the overall structure of the developing box, except for the counting assembly, the same parts as the developing box in the background art will adopt the same numbers.

(embodiment one)

The developing cartridge C has a front, a rear, a left, a right, an upper and a lower direction as shown in the drawing, the developing cartridge C is installed in a forward direction, the developing cartridge C is taken out in a backward direction, as shown in the drawing, the developing cartridge C includes a housing 1 accommodating toner, a developing roller 2 installed in the housing 1, first and

second end caps

11 and 12 respectively located at left and right sides of the housing 1, and a power receiving part 3 and a conductive member 5 respectively located at left and right sides of the housing 1, the power receiving part 3 penetrates the first end cap 11, and a first positioning portion 111 is further provided on the first end cap.

Further, the developing cartridge C further includes a driving gear 14 and a counting assembly 6 disposed at the left end or the right end of the casing 1, the driving gear 14 receives the driving force of the power receiving member 3, and further drives the counting assembly 6 to operate, in the embodiment of the present invention, the counting assembly 6 and the power receiving member 3 are respectively disposed at two ends of the casing 1, the driving force of the driving force receiving member 3 can be transmitted to the driving gear 14 through any one of the developing roller 2, the powder feeding roller (not shown) and the stirring frame (not shown), and at least a portion of the counting assembly 6 is covered by the second end cap 12.

The counting assembly 6 includes a counting member 61, an intermediate gear 62, and a pushing member 63, the counting member 61 and the intermediate gear 62 being formed separately, the counting member 61 being for interacting with a member to be counted in the electrophotographic image forming apparatus, the pushing member 63 being located between the counting member 61 and the intermediate gear 62 for forcing the counting member 61 away from the intermediate gear 62, as shown in fig. 2, the intermediate gear 62 including a full-tooth gear 421 and a power output portion 622 provided on the full-tooth gear 421, the intermediate gear 62 being engaged with the driving gear 14, so that the driving force of the power receiving member 3 is transmitted to the counting assembly 6 through the driving gear 14.

The counting member 61 comprises a chassis 611, a toggle protrusion 612 and an abutment 613 extending from one side of the chassis 611 along the rotation axis L of the counting assembly 6, and a power receiving portion 616 extending from the other side of the chassis 611 along the rotation axis L, i.e. the toggle protrusion 612 and the abutment 613 extend on the same side of the chassis 611 in the same direction, and the power receiving portion 616 extends on the other side of the chassis 611 in the opposite direction to the toggle protrusion 612 or the abutment 613. During counting, the toggle protrusion 612 is used for engaging and disengaging with a counted piece in the electrophotographic image forming apparatus, the abutting portion 613 is used for abutting against a guide rail 124 (described later) in the second end cap 12 to overcome the urging force of the urging member 63, so that the counting piece 61 is engaged with the intermediate gear 62, and when counting is completed, the abutting portion 613 disengages from the guide rail 124.

As shown in fig. 3A and 3B, the counter 61 further includes a guide rod 614 extending from the chassis 611 on the same side as the toggle protrusion 612, and an indication portion 615 provided on the chassis 611, the guide rod 614 extending farther from the chassis 611 along the rotation axis L than the abutting portion 613, the guide rod 614 abutting against the guide block 64 provided on the second end cap 12 when the abutting portion 613 disengages from the guide rail 124; the indicator 615 is shown aligned with a location on the second end cap 12 or housing 1 indicating that the counter assembly 6 is in an initial state in which it has been reset. The end of the guide rod 614 remote from the bottom plate 611 along the rotation axis L has a guide surface 614b, said guide surface 614b engages with a mating surface 643 on the guide block 64, the counter 61 is quickly disengaged from the intermediate gear 62 under the urging action of the urging member 63.

Fig. 4A is a perspective view of the inner side of an end cap according to an embodiment of the present invention; FIG. 4B is an enlarged schematic view of portion R of FIG. 4A; fig. 4C is a plan view of an end cap according to an embodiment of the present invention, viewed from the inside along its axis of rotation; fig. 5 is a schematic diagram of a state of the counting assembly according to an embodiment of the present invention when counting is completed.

The second end cap 12 includes an end cap body 121, a counting element receiving slot 122 disposed on the end cap body 121, a supporting shaft 123 disposed in the counting element receiving slot 122, a guide rail 124 disposed along an inner edge of the counting element receiving slot 122, and a notch 125 disposed on a sidewall of the counting element receiving slot 122. The supporting shaft 123 is used for supporting the rotation of the counting assembly 6, and a user of the developing cartridge can observe the abutment of the abutting portion 613 and the guide rail 124 through the notch 125, and the guide rail 124 has a starting end 124a and a terminating end 124b, wherein the starting end 124a is opposite to the notch 125, and the starting end 124a is disconnected from the terminating end 124b along the extending direction of the guide rail 124.

The guide blocks 64 are provided on the second end cap 12, and as shown in fig. 4A, the guide blocks 64 are arranged around the circumference of the support shaft 123, extend in the same direction as the support shaft 123, and the size of the guide blocks 64 in the direction of the rotation axis L gradually decreases in the rotation direction r of the counter piece 61. As shown in fig. 4B, the guiding block 64 includes a base 641 and a mating surface 643 disposed on the base 641, wherein the mating surface 643 is a bevel or a twisted surface, and the mating surface 643 is gradually far away from the housing 1 along the rotation direction r, and correspondingly, the guiding surface 614B is also a bevel or a twisted surface, and the guiding surface 614B is mated with the mating surface 643, so that the rotation of the counting assembly 6 at the end of the counting, or at the end of the counting process, forms an accelerated rotation process, and for this reason, it is more favorable for the rotating counting assembly 61 to arrange the guiding surface 614B and the mating surface 643 as twisted surfaces to allow the counting assembly 61 to rotate quickly.

As shown in fig. 4C, the mating surface 643 corresponds to an angle a along the rotation direction r, and as shown in fig. 5, the mating surface 643 corresponds to a height value h on the rotation axis L, the angle a is preferably 30 ° -45 °, and the height value h is preferably 3mm-5mm for realizing the acceleration process of the counting member 61.

Returning to fig. 3A, the guide lever 614 is further provided with a retaining surface 614a adjacent to the guide surface 614B, the retaining surface 614a is a flat surface, correspondingly, the guide block 64 is provided with a back flat surface 645 matched with the retaining surface 614a, as shown in fig. 4B, the guide block 64 is further provided with a front flat surface 644 and a limit block 642, the front flat surface 644 and the back flat surface 645 are respectively positioned at two ends of the matching surface 643 along the rotation direction r, the limit block 642 is positioned at the downstream of the back flat surface 645, and the front flat surface 644 is positioned at the upstream of the matching surface 643, when the counting member 61 enters the counting end section, the retaining surface 614a is abutted with the front flat surface 644, at this time, the abutting portion 613 is just about to be disengaged from the terminal end 124B of the guide rail, the urging member 63 is in the elastic deformation state, the matching surface 643 is initially abutted with the guide surface 614B along with the rotation of the counting member 61, and under the elastic reset force of the urging member 63, the counting member 61 is forced to the right, as shown in fig. 5, the urging force is transmitted to the engagement surface 643 through the guide surface 614b, and the counting member 61 is accelerated to rotate until the guide lever 614 abuts against the stopper 642, the holding surface 614a abuts against the rear plane 645, and the counting assembly 6 completes the counting process.

The track of the counting member 61 in the embodiment of the invention at the end of the counting is controlled by the abutment of the guide surface 614b and the mating surface 643, finally, under the limiting action of the limiting block 642, the guide rod 614 is prohibited from further rotating, the counting member 61 stops rotating, and meanwhile, the movement speed of the counting member 61 at the end of the counting can be realized by adjusting the twisting angles of the guide surface 614b and the mating surface 643 and setting the height value of the mating surface 643 along the rotation axis L according to the requirement, so as to improve the counting precision of the counting assembly.

(second embodiment)

Fig. 6 is an exploded schematic view of a counting assembly according to a second embodiment of the present invention; fig. 7 is a perspective view of the inside of the end cover according to the second embodiment of the present invention.

The present embodiment is different from the first embodiment in that the positions of the guide rod 614 and the guide block 64 are interchanged, that is, the guide block 64 is provided on the counter 71, and the guide rod 614 is provided on the second end cap 12. As shown in fig. 6, the guide block 64 protrudes from the chassis 711 of the counter 71 in the same direction of the rotation axis L as the toggle protrusion 612/abutment 713, and the guide block 64 is still provided with a slope or a twisted surface 643 which gradually gets away from the chassis 711 in the rotation direction r. In the rotation direction r, the mating surface 643 corresponds to an angle a, and the mating surface 643 corresponds to a height value h on the rotation axis L, the angle a is preferably 30 ° to 45 °, and the height value h is preferably 3mm to 5 mm.

In the counting assembly 7 of the present embodiment, when the abutting portion 713 is disengaged from the rail terminating end 124b during counting, the guiding rod 614 abuts against the inclined surface or the twisted surface 643, and the counting member 71 completes the acceleration rotation action under the urging action of the urging member 73.

(third embodiment)

Fig. 8 is an exploded schematic view of a counting assembly according to a third embodiment of the present invention; fig. 9 is a perspective view of the inner side of the end cap according to the third embodiment of the present invention; fig. 10 is a plan view of the end cover according to the third embodiment of the present invention, as viewed from the inside along the rotation axis thereof.

The present embodiment is different from the first embodiment in that the guide rod 614 is eliminated, the abutting portion 813 abutting against the guide rail 124 functions as a guide rod, as shown in fig. 8 and 9, the abutting portion 813 protrudes from the chassis 811 along the rotation axis L, the guide block 64 is formed integrally with the guide rail 124, the mating surface 643 is connected to the guide surface of the guide rail 124, and the abutting portion 813 can be directly coupled to the mating surface 643 after being disengaged from the guide rail 124.

The engagement surface 643 is also provided as a bevel or a twisted surface, an angle b of the engagement surface 643 in the rotation direction r is preferably 30 ° to 45 °, a height h of the guide surface 643 in the rotation axis L is preferably 3mm to 5mmm, and the engagement surface 643 is gradually distant from the chassis 811.

In the counting assembly 8 of the present embodiment, the abutting portion 813 abuts against the guide rail 124 during counting, the urging member 82 elastically deforms, when counting is about to be completed, the abutting portion 813 is separated from the guide rail 124 and abuts against the mating surface 643, and under the urging action of the urging member 82, the counting member 81 completes the acceleration rotation action.

Claims

1. A developing cartridge includes a housing accommodating toner, a power receiving member and a counting assembly at longitudinal ends of the housing for receiving a driving force from outside, and an end cap covering at least a portion of the counting assembly for interacting with an external counted member,

the counting assembly comprises a counting part, an intermediate gear and an urging part, the counting part and the intermediate gear are formed in a split mode, the urging part is located between the counting part and the intermediate gear and used for urging the counting part to be far away from the counting gear, and the intermediate gear receives the driving force of the power receiving part and drives the counting part to rotate;

the counting assembly is characterized by also comprising a guide rod or a guide block arranged on the counting part and a guide block or a guide rod arranged on the end cover;

the guide block comprises a matching surface matched with the guide rod, and the matching surface is an inclined surface or a twisted surface and is used for guiding the guide rod in the counting process of the counting assembly;

the corresponding angle of the matching surface is 30-45 degrees along the rotating direction of the counting piece, and the height of the matching surface is 3-5 mm along the rotating axis of the counting piece.

2. The developing cartridge according to claim 1, wherein the guide block includes a base portion and a stopper provided on the base portion, the stopper abutting against the guide lever when the counting assembly completes counting.

3. The developing cartridge according to claim 2, wherein the guide block further includes a rear plane disposed adjacent to the mating face, the rear plane being located between the mating face and the stopper in the rotational direction;

the tail end of the guide rod far away from the guide rod is adjacently provided with a guide surface and a holding surface, and when counting is finished, the holding surface is abutted to the back plane.

4. A developing cartridge according to claim 3, wherein the counting member further includes a chassis and an abutting portion provided on the chassis, the guide lever protruding from the chassis; the end cover includes the guide rail with butt portion butt, when butt portion and guide rail butt, compels to push away the piece and takes place elastic deformation, when butt portion and guide rail break away from the butt, compels to push away the piece and compels to push away the count piece for guide bar and fitting surface cooperation.

5. The developing cartridge according to claim 4, wherein the end cap further includes a support shaft supporting the counter assembly, and the guide blocks are arranged along a circumference of the support shaft and extend in the same direction as the support shaft.

6. The developing cartridge according to claim 5, wherein a dimension of the guide block in the direction of the rotation axis is gradually reduced in the rotation direction of the counter member.

7. A developing cartridge according to claim 3, wherein the counter member further includes a chassis and an abutting portion provided on the chassis, the guide block is provided on the chassis, and the guide rod protrudes from the end cap; the end cover includes the guide rail with butt portion butt, when butt portion and guide rail butt, compels to push away the piece and takes place elastic deformation, when butt portion and guide rail break away from the butt, compels to push away the piece and compels to push away the count piece for guide bar and fitting surface cooperation.

8. The developing cartridge according to claim 3, wherein the end cap includes a guide rail abutting the guide bar, and the guide block is formed integrally with the guide rail.